Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS New Orleans, LA

February 15, 2021Saint James Parish, Louisiana

NWS New Orleans, LA issued this special weather statement at Feb 15, 2021, 7:06 AM CST for Saint James Parish, Louisiana. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Feb 15, 2021, 7:06 AM CST (13:06 UTC)
Expired: Feb 15, 2021, 7:30 AM CST
In force: 24 min
Issued by: NWS New Orleans, LA

County Saint James Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.1 hours before the alert went out and 95 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 20 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 319 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 461 m²/s²
0-3 km storm-relative helicity: 590 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New Orleans, LA wrote its last area forecast discussion before this special weather statement went out at Feb 15, 4:13 AM CST, 2 hours 53 minutes earlier.

Area forecast discussion, Feb 15, 4:13 AM CST, 2 hours 53 minutes before

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In the hours before

Special weather statement, Feb 15, 7:06 AM CST, 0 minutes before

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<head>
  <meta charset="utf-8">
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  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 14, 7:17 PM CST	Hard Freeze Warning	LIX	East Feliciana, Pointe Coupee, Saint Helena, Tangipahoa, West Feliciana	41 hr
Feb 14, 7:17 PM CST	Hard Freeze Warning	LIX	Assumption, East Baton Rouge, Iberville, Saint Bernard, Saint Helena, Saint James and 4 more	41 hr
Feb 14, 7:17 PM CST	Wind Chill Advisory	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 7 more	41 hr
Feb 14, 9:26 PM CST	Gale Warning	LIX		17 hr
Feb 14, 9:26 PM CST	Small Craft Advisory	LIX		9 hr
Feb 15, 7:14 AM CST	Special Marine Warning	LIX		61 min
Feb 15, 8:17 AM CST	Special Marine Warning	LIX		58 min
Feb 15, 8:56 AM CST	Special Weather Statement	LIX	Plaquemines	64 min
Feb 15, 9:14 AM CST	Special Marine Warning	LIX		61 min
Feb 15, 9:45 AM CST	Special Marine Warning	LIX		43 min
Feb 15, 10:26 AM CST	Special Marine Warning	LIX		37 min

Nearby

Special Weather Statements in Louisiana, 2021 Every special weather statement in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.